nuttallwin function

Nuttall-defined minimum 4-term Blackman-Harris window

Return the filter coefficients of a Blackman-Harris window defined by Nuttall of length n.

nuttallwin(n, method = c("symmetric", "periodic"))

Arguments

• n: Window length, specified as a positive integer.

• method: Character string. Window sampling method, specified as:

  • "symmetric": (Default). Use this option when using windows for filter design.
  • "periodic": This option is useful for spectral analysis because it enables a windowed signal to have the perfect periodic extension implicit in the discrete Fourier transform. When periodic is specified, the function computes a window of length n + 1 and returns the first n points.

Returns

Nuttall-defined Blackman-Harris window, returned as a vector.

Details

The window is minimum in the sense that its maximum sidelobes are minimized. The coefficients for this window differ from the Blackman-Harris window coefficients computed with blackmanharris and produce slightly lower sidelobes.

Examples

n <- nuttallwin(64)
plot (n, type = "l", xlab = "Samples", ylab =" Amplitude")

See Also

blackman, blackmanharris

Author(s)

Sylvain Pelissier, sylvain.pelissier@gmail.com .

Conversion to R by Geert van Boxtel, G.J.M.vanBoxtel@gmail.com .